<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
    <script type="text/javascript">
      let arr = [22,33,44,55];

      //values
      for(let value of arr.values())
      {
        alert(key);
      }



    </script>
  </head>
  <body>

  </body>
</html>
